Guard for heaters and similar articles



Patented Mar. 8, 1932 UNITED STATES LOUIS LUDWIG, OF BROOKLYN, NEWYORK GUARD FOR HEATERS AND SIMI.AR ARTICLES Application filed March 24, 1931. Serial No. 524,875.

My invention relates to wire guards and more particularly to themeans by which such guards are attached to the articles on which employed. The main object of my inven- 5 tion is to provide improved means for securing a guard to a heater or other article in such a manner that, while securely fastened and safe from displacement by vibration or sudden j ars, it may still be easily detached 1 when desired. A further object is to pro- Vide a gnard of very simple and inexpensive construction.

These and other objects and advantages Will be readily understood from the follow- 15 ing description and from the accompanying drawings of a preferred embodiment in which, however, certain modifications may be made without departing from the scope of the invention. In the drawings Fig. 1 is a plan view of the guard shown attached to the bowl of a so-called sun-bowl heater,

Fig. 2 is a side view of Fig. 1, Fig. 3 is a fragmentary view of the bowl, Fig. 4 is a ragmentary view of the g1iard frame, and

Fig. 5 is a fragmentary view of a slightly modified guard frame.

Figs. 3, 4 and 5 are drawn to alarger scale 30 than the other views.

Referring now to the drawings, the bowl of a sun-bowl heater is shoWn at and its circnmferential flange at 11. Two sets of slots 12 and 13 are Punched diametrically opposite each other in the fiange 11. The guard consists of a ring 14 which is located concentric with a frame formed of two semicircular members 15 and 16. These members are connected to the ring by a plurality of curved rods 17. The ends of the rods are preferably welded to the frame members and the ring, but may be attached in any other suitable manner.

Referring now particularly to Fig. 4, the ends 18 of the frame members 15 and 16 are bent downward and folded backnpon themselves so as to form a notch 18 and a detent 20. The notch is made of a width slightly greater than the thickness of the stock in the flange 11. The detents are slightly shorter than the length ofthe slots 12 and 13. In-

stead of making the notch and detent as just described, the method shown in Fig. 5 may be empl'oyed. In that case a notch 21 is madeby cutting into the bent end and thus forming the datent 22.

The ends of the frame members 15 and 16 are inserted in theslots 12 and 13 while the frame is sprung together by applying a light pressure on the curved rods in the directions indicated by the arrows 23. When the pressure is released the detents are securely clamped under the flange 11.

While.I have shownthe rods 17 connected to a concentriC ring, it Will be nndcrstood that this ring might be omitted and that' dia metrical rods might be connected from one frame.xneniber to the other. In that case the rodS are connected together, at their intersection, bygany suitable means.

Having described my invention, what I claim asnew and wish to protect by Letters Patent'isz:- A v 1. In a gnard of the class described, two semicirCular frame membrs forming a circular haine and having theirends spaced apart, a plurality of rods diametrically connecting with said frame members and attached to each other at their intersection, and the ends of the frame members bent to engage in openings formed in the article on which the guard is erhployed, the distances between the openings being diferent to the distances between the bent ends of the frame members.

2. In a guard of the class described, two semicircular frame members forming a circular frame and having their ends spaced apart, a plurality of curved rods diametrically connecting said frame members and attached to each other at their intersection, the ends of the frame members bent to engage in openings formed in the flange on the article on Which the guard is employed, and detents formed on said bent ends for engagement under said flange, the distances between the openings being diierent to the distances between the bent ends of the frame members.

3. In a guard of the class described, two semicircular frame members forming a circular frame and having their ends spaced apart, an annular Inember located concentrically with the said frame members, a plurality cf radial r0ds secnring the frame members to the annular member, and the ends of said frame members bent t0 engage in openings formed in the article on which the guard is employed, the distances between the-opcnings being difierent to the distances between the bent ends of the frame members.

4. In a guard of the class described, two

semicircular frame members f0rming a 'circu lar frame and having theirends spaced apart, an annularniemberlocated concentricallywith the said frame members, a plurality of' curved rods radially connected between the frame members and.:the annulanmcmber, -the ends of said :rame members bent (t0 engage in openings f0rmed inthe flange on the article on which the guard is employed, and detents f0rmed on saidbent ends for engagement under said flange.

5. In combination with a snn bowl heater having a plurality of spaced openings formed in its enter fiange, a plurality of arcnated f1a1ne members together forming a circular irame, a plnrality of radial rods each having one end fastened tonne of said frame niem.

bers, the other ends of all of said rods secured t0 a substantially concentrically located supporting member, and the ends of the frame members bent for engagementin the open ings in said hcater fiange, the distances between the openings being difierent to the distance between the bentends of the frame 6. In combination with a sun bowl heater havinga plrality 0f spaced openings formed in its outer flange, a plnrality of arcuated frame members which together form a circular frame, a plnrality of curved radial rods each having one end fastened t0 0neof said rame members, the other ends of all of said rods secured t0 asubstantially concentrically located supporting mcmber, the ends of all the ramemembers bent t0 engagein the flange openings,- and detents formed on said bent ends for engagement undersaid fiange.

LOUIS LUDWIG 

